============================= WARNING: suspicious RCU usage 4.15.0-rc9+ #284 Not tainted ----------------------------- net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor1/22368: #0: (cb_lock){++++}, at: [<00000000b2149211>] genl_rcv+0x19/0x40 net/netlink/genetlink.c:634 #1: (genl_mutex){+.+.}, at: [<000000009c7535e2>] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [<000000009c7535e2>] genl_rcv_msg+0x115/0x140 net/netlink/genetlink.c:622 stack backtrace: CPU: 0 PID: 22368 Comm: syz-executor1 Not tainted 4.15.0-rc9+ #284 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4587 tipc_bearer_find+0x2b4/0x3b0 net/tipc/bearer.c:177 tipc_nl_compat_link_set+0x329/0x9f0 net/tipc/netlink_compat.c:729 __tipc_nl_compat_doit net/tipc/netlink_compat.c:288 [inline] tipc_nl_compat_doit+0x15b/0x670 net/tipc/netlink_compat.c:335 tipc_nl_compat_handle net/tipc/netlink_compat.c:1119 [inline] tipc_nl_compat_recv+0x1135/0x18f0 net/tipc/netlink_compat.c:1201 genl_family_rcv_msg+0x7b7/0xfb0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x14b/0x380 net/netlink/af_netlink.c:2409 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline] netlink_unicast+0x4ee/0x700 net/netlink/af_netlink.c:1301 netlink_sendmsg+0xa4a/0xe60 net/netlink/af_netlink.c:1864 sock_sendmsg_nosec net/socket.c:638 [inline] sock_sendmsg+0xca/0x110 net/socket.c:648 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2028 __sys_sendmsg+0xe5/0x210 net/socket.c:2062 SYSC_sendmsg net/socket.c:2073 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2069 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f38eb38fc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020003000 RDI: 0000000000000013 RBP: 00000000000005c4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f7b00 R13: 00000000ffffffff R14: 00007f38eb3906d4 R15: 0000000000000000 binder_alloc: binder_alloc_mmap_handler: 22497 20000000-20002000 already mapped failed -16 device eql entered promiscuous mode netlink: 'syz-executor5': attribute type 1 has an invalid length. netlink: 'syz-executor5': attribute type 1 has an invalid length. kauditd_printk_skb: 1228 callbacks suppressed audit: type=1400 audit(1517208697.504:14750): avc: denied { map } for pid=22780 comm="modprobe" path="/lib/x86_64-linux-gnu/ld-2.13.so" dev="sda1" ino=2668 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1517208697.504:14751): avc: denied { map } for pid=22780 comm="modprobe" path="/lib/x86_64-linux-gnu/ld-2.13.so" dev="sda1" ino=2668 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1517208697.510:14752): avc: denied { map } for pid=22777 comm="modprobe" path="/lib/x86_64-linux-gnu/libc-2.13.so" dev="sda1" ino=2784 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1517208697.510:14753): avc: denied { map } for pid=22780 comm="modprobe" path="/lib/x86_64-linux-gnu/libkmod.so.2.1.3" dev="sda1" ino=2811 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1517208697.510:14754): avc: denied { map } for pid=22780 comm="modprobe" path="/lib/x86_64-linux-gnu/libkmod.so.2.1.3" dev="sda1" ino=2811 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=458 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=459 audit_rate_limit=0 audit_backlog_limit=64 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=26332 sclass=netlink_route_socket pig=22840 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=26332 sclass=netlink_route_socket pig=22840 comm=syz-executor4 netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. device eql entered promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl binder: 22928:22942 Release 1 refcount change on invalid ref 0 ret -22 device eql entered promiscuous mode binder: 23101 RLIMIT_NICE not set binder: 23101 RLIMIT_NICE not set binder: release 23093:23112 transaction 90 out, still active binder: undelivered TRANSACTION_COMPLETE binder_alloc: binder_alloc_mmap_handler: 23093 20000000-20002000 already mapped failed -16 binder: 23114 RLIMIT_NICE not set binder: BINDER_SET_CONTEXT_MGR already set binder: 23093:23101 ioctl 40046207 0 returned -16 binder_alloc: 23093: binder_alloc_buf, no vma binder: 23093:23101 transaction failed 29189/-3, size 0-0 line 2903 binder_alloc: 23093: binder_alloc_buf, no vma binder: 23093:23114 transaction failed 29189/-3, size 0-0 line 2903 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 23093:23101 transaction 90 in, still active binder: send failed reply for transaction 90, target dead binder: release 23093:23114 transaction 91 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 91, target dead QAT: Invalid ioctl QAT: Invalid ioctl kauditd_printk_skb: 1361 callbacks suppressed audit: type=1400 audit(1517208702.505:15905): avc: denied { net_admin } for pid=3725 comm="syz-executor3" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: audit_backlog=66 > audit_backlog_limit=64 audit: audit_lost=530 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: audit_backlog=66 > audit_backlog_limit=64 audit: audit_lost=531 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: audit_backlog=66 > audit_backlog_limit=64 audit: audit_lost=532 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded